Rafael Costa-Amaral

collaborators

3 papers

cond-mat.mtrl-sci2026

Oxygen-deficiency-driven phase segregation enables enhanced hole transport in amorphous tellurium oxides

Rafael Costa-Amaral, Yu Kumagai

Amorphous oxide semiconductors allow scalable electronics, yet high-mobility p-type counterparts remain rare because O- $2 p$ valence bands are typically deep and spatially localized…

cond-mat.mes-hall2024

Exploring Intrinsic and Extrinsic $p$ -type Dopability of Atomically Thin $I^^{2}$ -TeO $_{2}$ from First Principles

Rafael Costa-Amaral, Soungmin Bae, Vu Thi Ngoc Huyen +1

Two-dimensional (2D) $I^^{2}$ -TeO $_{2}$ has gained attention as a promising material for optoelectronic and power device applications, thanks to its transparency and high hole mobility.…

cond-mat.mtrl-sci2024

Native defects and $p$ -type dopability in transparent $I^^{2}$ -TeO $_{2}$ : A first-principles study

Vu Thi Ngoc Huyen, Soungmin Bae, Rafael Costa-Amaral +1

Although $I^^{2}$ -TeO $_{2}$ is a promising $p$ -type transparent conducting oxide (TCO) due to the large optical gap ( $\sim$ 3.7 eV) and a light effective hole mass, its hole dopability s…

Oxygen-deficiency-driven phase segregation enables enhanced hole transport in amorphous tellurium oxides

Exploring Intrinsic and Extrinsic p-type Dopability of Atomically Thin I^2-TeO2​ from First Principles

Native defects and p-type dopability in transparent I^2-TeO2​: A first-principles study

Exploring Intrinsic and Extrinsic $p$ -type Dopability of Atomically Thin $I^^{2}$ -TeO $_{2}$ from First Principles

Native defects and $p$ -type dopability in transparent $I^^{2}$ -TeO $_{2}$ : A first-principles study